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Document Title |
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7472593 |
Fluid level regulator
A biological specimen collection and transfer system, comprises a biological sample container configured for storing a biological fluid sample, and a fluid level regulator configured to determine a...
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7324901 |
Water measurement auto-networks
Water measurement auto-networks and methods of operation are disclosed herein. An exemplary method may include determining a water level at a first water measurement station in an auto-network. The...
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7216530 |
Fluid containment element leak detection apparatus and method
The invention may be used for detecting fluid leaks in a fluid containment element having a primary element enclosed in a secondary element. A fluid container may have a reservoir with an...
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6851312 |
Water-bearing household appliance
In a water-bearing household appliance with a liquid container filled through a valve in a liquid feed line, and in which a liquid filling level is detected for monitoring at least one safety level...
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6763714 |
Method and apparatus for controlling the level of liquids
Method for controlling the level of a liquid ( 2 ) contained in at least one vessel ( 3 ), which comprises the following operative steps: inserting a measure tube ( 1 ) in the liquid ( 2 );...
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6700503 |
Method of communicating conditions within a storage tank level
A system for monitoring the conditions within a storage tank includes a sensor communicating data indicative of conditions within the storage tank to a base controller. The data is decoded and...
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6666085 |
Liquid level sensor
A liquid-level measuring device measures the liquid level in a tank. This invention measures liquid level by measuring the pressure at the bottom of the tank. A pressure sensor is placed in the top...
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6601449 |
Self-regulating bubble tube assembly
A self-regulating bubble tube assembly is used for determining the hydrostatic pressure exerted by fluids, such as drilling mud. The bubble tube assembly can be used to determine fluid level based...
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6510736 |
Liquid depth sensing system
The present invention is a liquid depth sensing system utilizing the bubble tube or purge operating principle. In this system, a pneumatic tube extends downwardly into the liquid, and air (or other...
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6490919 |
Well water level measurement and display apparatus
A well water level sensing apparatus using a pressurized air column in contact with the water at its distal end to derive a correlated value dependent upon the length of the air column which is...
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6298721 |
Continuous liquid level measurement system
A continuous liquid level measurement system is disclosed which is based upon a differential pressure measurement. The pressure of the liquid level to be measured is calibrated with a second...
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6220091 |
Liquid level pressure sensor and method
The present invention provides methods and systems for forming deposition films on semiconductor wafers. In particular, the present invention measures the amount of liquid remaining in a bubbler...
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6064311 |
Process for generating at least one warning signal relating to the level in a product storage tank and device for implementing the process
The process for generating at least one warning signal relating to the level in a tank (3) for storing a product (4) comprises the following steps: the storage level of the product in the tank,...
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5983716 |
Method and measuring device for measuring hydrostatic pressure, in particular that of ground water
The invention covers a procedure for measuring hydrostatic pressure, especially that of ground water, with the particularity that air is bubbled into the ground water, the pressure in the measuring...
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5966311 |
Method of overfill probe identification and control
A fail-safe fluid transfer control apparatus has full redundancy in the response to various inputs such as overfill probe signals, ground detection signals, and the like. Independent microprocessor...
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5953954 |
Installation and method for determining the level and density of a liquid in a tank, using a single immersed bubble probe
An installation and method for determining the level and density of a liquid in a tank. A reference probe leads into the tank, above the liquid. A single bubble probe is connected by a valve to the...
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5868029 |
Method and apparatus for determining fluid level in oil wells
A method and apparatus for continuously monitoring fluid level in an oil well, by measuring changes in the weight of the oil well tubing which result from changes in the buoyancy of the tubing...
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5831154 |
Process for determining a liquid quantity, particularly an engine oil quantity in a motor vehicle
A process for determining the quantity of a liquid situated in a largely closed system of a motor vehicle is provided. The filling level of the liquid in the system fluctuates as a function of the...
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5771178 |
Fail-safe fluid transfer controller
A fail-safe fluid transfer control apparatus has full redundancy in the response to various inputs such as overfill probe signals, ground detection signals, and the like. Independent microprocessor...
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5722289 |
Cooking appliance with level detection apparatus and method
A deep fat fryer system includes a vat for holding a quantity of cooking medium. A tube or conduit is disposed between a position in the vat corresponding to a lower desired level of cooking medium...
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5519638 |
Automatic system for monitoring and replenishing hazardous liquids in tanks
An automatic system is disclosed which monitors and replenishes hazardous liquids in their holding tanks, as such liquids are typically used in manufacturing processes. The inventive system and...
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5463378 |
Proximity detection system and oscillator, and method of using same
A proximity detection system includes a dual mode oscillator for generating a pair of ON and OFF control signals. A sensing circuit including a capacitance device detects the presence of a...
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RE34754 |
Fluid sampling apparatus
A fluid sampling apparatus is disclosed for withdrawing samples of groundwater or other fluids from a well or other monitoring site. The apparatus preferably includes pump means, conduit means and...
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5347863 |
Asphalt oil tank monitor
A pipe probe is installed downward into the liquid contained in the tank and is connected pneumatically to a remote reporting unit located in the operator's area. An air pump pressurizes the probe,...
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5311881 |
Load sensing and measuring system
A system for sensing and measuring the forces acting on the body extremities of individuals is disclosed. The system is intended for use primarily in an aqueous medium, i.e. as an aquatic...
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5309764 |
Tank gauging system
A system to determine fluid level in a tank using several tubes extending to different levels in the tank. Gas pressure in the tubes needed to release bubbles from the exit ends of the tubes...
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5279158 |
Steam bubbler water level measurement
A liquid level measuring system for the steam drum of a steam generator employs a plurality of bubblers spaced along the length of the drum to obtain a level profile. The steam pressure to the...
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5271273 |
Oil level indicator
An oil level indicator having an oil container and an indicator tube extending therefrom. The indicator tube is inserted through a dip stick tube of an engine into the oil pan.
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5261276 |
Fuel oil monitor system and method
A system and method for providing for a remote readout of liquid levels in an oil tank, which system includes an oil tank having an air vent and containing liquid amounts whose levels are to be...
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5167155 |
Submersible liquid level measuring system and method of use
A system (10) and methods of use for determining the level of a body of liquid (16), e.g., a chemical, in a storage tank, irrespective of the specific gravity of that liquid. The system (10)...
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5163324 |
Bubbler liquid level sensing system
A bubbler liquid level sensing apparatus comprises a liquid storage tank with a vapor region and a fluid region and first and second sensing tubes exposed to the vapor region and fluid region,...
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5146783 |
Liquid container hydrostatic level gauge
A liquid container hydrostatic level gauge, in particular a fuel tank level indicator, which operates with a differential pressure sensor, a zero point calibration related to the height of the fuel...
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5115679 |
Level measuring bubbler tube tip
A level measuring system for measuring the level of a fluid in a tank employing tubes through which gas is passed extending to different levels in the fluid, whereby the level may be measured by...
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5107706 |
Level sensor device for household appliances
A level sensing device for household appliances or the like. The device comprises a compartment (25) which at its lower part via a single combined inlet and outlet (42) is connected to a treatment...
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5107699 |
Area converter for volumetric leak detector
A volumetric leak detector. An overfilled storage tank has at its upper end a fill pipe predetermined surface area. An area converter reservoir is connected at this upper end with the storage tank,...
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5095739 |
Tank leak detector
A tank leak detector has a pressure transmitter suspended in a tank to detect liquid level changes of a fluid by sensing a pressure which changes when a liquid level changes. The transmitter...
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5094102 |
Liquid level detection
A method and apparatus for detecting the presence of a liquid level at a monitor point along the depth of a borehole utilizes a diaphragm pressure switch for sensing the pressure of a captive air...
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5090242 |
Remote, pneumatic, continuous sensor of the liquid level in a vacuum tank
An apparatus and method of the gas-bubbling type for determining the level of a body of liquid sewage standing in a tank which is vented to a partial vacuum; that is a tank whose internal gas...
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5059954 |
Liquid level sensing system
A sensing system for detecting a low level of liquid in a container employs an open-ended probe which is partially submerged in the liquid. The probe contains a pressurized compressible fluid,...
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5052222 |
Multiple-unit water depth sensor system
Each unit of an array of submerged oceanographic devices is provided with a depth gauge of the air bubbler type. A typical depth gauge consists of a tube or air line that has one end fluidly...
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5047124 |
Apparatus for feeding gas into a saline solution
An apparatus for feeding gas into a heated saline solution for pressure measurement or to pump this solution. The gas is introduced into the solution through a gas bubbling-in pipe having a gas...
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5031447 |
Standpipe leveler for hydrostatic pressure tank tester
A standpipe leveler is suitable for use with the standpipe of a tank tester that is elevated to produce hydrostatic pressure on the tank. The leveler includes a graduate container for receiving...
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5020368 |
Method and system measuring a vertical density profile of a fluid
Method and system for measuring vertical density profile of fluid by pressurizing an array of pipes, determining level and pressure signals on each pipe and deriving profile therefrom.
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4972710 |
Liquid level multiplier and leak detection system for storage tanks
A tank leak detection system in which a liquid level multiplier is connected to a differential pressure transmitter one side of which may be piped back into the tank to compensate for internal...
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4949572 |
Method and apparatus for determining physical properties of liquids
A microprocessor based instrument is provided for measuring liquid level, specific gravity, or density. The instrument includes a mainframe controller, a remote sensor, and two sets of dip tube...
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4840056 |
Fuel measuring system
A fuel measuring system of the bubble type is adaptable for use with a plurality of tanks of predetermined differing geometries. The system employs at least two bubbling tubes located at...
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4807464 |
Leak detector apparatus and method
An apparatus useful for detecting a leak in a tank filled with liquid comprising: a measuring chamber adapted to hold a volume of liquid and having first sensing acting to monitor the volume of...
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4760856 |
Method and apparatus for conditioning fly ash
A method and apparatus for conditioning fly ash discharged from a silo to prevent the material from excessively dusting during discharge and transit to a storage or dump site. Apparatus includes a...
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4727936 |
Recovery and control system for leachate collection
A fluid sampling apparatus is disclosed for withdrawing samples of groundwater or other fluids from a well or other monitoring site. The apparatus preferably includes pump means, conduit means and...
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4719799 |
Head for a bubble tube
Apparatus for sensing hydrostatic pressure in a fluid, forming a head for a bubble tube for immersion into the fluid. The head is formed of a plate having a flat lower surface for horizontal...
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